Ada

Ada had been the stuck kid once. She remembered it with uncomfortable clarity: a classroom, a puzzle on the board, every other hand up, hers flat on the desk, her face hot. A teacher had called it "not a math person." She'd believed it for years.

What un-taught her wasn't a burst of talent. It was an old woman at a market stall doing logic grids for fun, who let Ada watch. The woman never guessed. She'd tap a cell and murmur why it couldn't be most things, and then say, almost bored, "so it's this." No magic. No speed. Just a patient habit of asking what's forbidden here? until one answer was left standing.

"You're not fast," young Ada had said, half-accusing.

"Fast is for people showing off," the woman said. "I'm sure. Sure beats fast every time." Ada built her whole guild on that sentence.

So the Guild runs on Ada's one frame, and each artisan is a way of living it. When someone's stuck, Ada doesn't solve it — she asks the question that finds the forced cell, then hands them to whoever fits. "You've got a row that's nearly full? That's Onlie's whole art — go watch her narrow it." "You know the total but not the parts? Kaku will show you how a sum names its own pieces." "You only know which is bigger, not the numbers? Chevron never needs the numbers first." "You keep guessing where a star goes? Vega will teach you to forbid instead."

She's careful with the word guess. Not forbidden — but flagged. "A guess is fine when you've truly run out of forced moves," she says, "and that's rarer than you'd think. Almost always there's a certain move you haven't found yet. Slow down. Ask what's forbidden. The forced cell is hiding in plain sight."

A boy threw down his pencil. "I've been stuck for ten minutes. I hate this."

Ada didn't rush to reassure him. "Ten minutes stuck is normal," she said. "It doesn't mean you're not a puzzle person. It means the grid hasn't shown you its rule yet. Where are you sure? Not where you're guessing — where are you actually certain of even one cell?"

He glared, then softened, then pointed at a corner. "…That one has to be a four. Everything else is already in its box."

"There it is," Ada said quietly. "You were sure the whole time. You just kept looking at the part that scared you instead of the part you knew." He placed the four. It forced the next. His shoulders, which had been up around his ears, came down an inch. He didn't say anything, but Ada saw it — the exact moment the puzzle stopped being an enemy.